Her husband no longer has the same sexual desire or erectile power as he used to, but Reina is the complete opposite; as she gets older, her sexual desires become more and more intense and lewd. It may have been inevitable that such a Reina would fall into a forbidden relationship with her son, Kazuya. Kazuya has an incredible sexual desire, and perhaps because they are mother and daughter, they have an excellent compatibility. And the relationship between the two becomes more and more extreme...